RF
+
Illustration of inhaled pollen grains in a lung Pollen grains are allergens and can cause hay fever (allergic rhinitis) when inhaled They can also t
RF
+
Illustration of inhaled pollen grains in the windpipe (trachea) Pollen grains are allergens and can cause hay fever (allergic rhinitis) when inhaled
RF
+
Illustration of inhaled pollen grains in a lung Pollen grains are allergens and can cause hay fever (allergic rhinitis) when inhaled They can also t
RF
+
Illustration of inhaled pollen grains in the windpipe (trachea) Pollen grains are allergens and can cause hay fever (allergic rhinitis) when inhaled
RF
+
Illustration of inhaled pollen grains on the nasal epithelium Pollen grains are allergens and can cause cause hay fever (allergic rhinitis) when inha
RF
+
Illustration of inhaled pollen grains on the nasal epithelium Pollen grains are allergens and can cause cause hay fever (allergic rhinitis) when inha
RF
+
Assorted pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by NEMES LASZLOSCIEN
RF
+
Assorted pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by NEMES LASZLOSCIEN
RF
+
Sunflower (Helianthus annuus) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants
ED
+
False-colour scanning electron micrograph of pollen grains of Common Mallow Malva sylvestris The grains are spherical about 108 micrometres across
RF
+
Sunflower (Helianthus annuus) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants
RF
+
Silver birch (Betula pendula) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants
RF
+
Silver birch (Betula pendula) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants
RF
+
Rose (Rosa sp) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by NEMES LASZL
RF
+
Rose (Rosa sp) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by NEMES LASZL
RF
+
Rapeseed (Brassica napus) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by N
RF
+
Rapeseed (Brassica napus) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by N
RF
+
Rapeseed (Brassica napus) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by N
RF
+
Passion flower (Passiflora sp) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants
ED
+
False colour scanning electron micrograph of many pollen grains of a Colts foot Tussilago farfara Its outer wall (exine) consists of sharp spines; t
RF
+
Passion flower (Passiflora sp) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants
RF
+
Geranium sp pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by NEMES LASZLOS
RF
+
Geranium sp pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by NEMES LASZLOS
RF
+
Eucalyptus sp pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by NEMES LASZLO
RF
+
Eucalyptus sp pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants by NEMES LASZLO
RF
+
Dandelion (Taraxacum officinale) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants
RF
+
Dandelion (Taraxacum officinale) pollen grains illustration Pollen grains are reproductive structures produced by the male parts of flowering plants
RF
+
Anther structure illustration by ALI DAMOUHSCIENCE PHOTO LIBRARY
RF
+
Anther structure illustration by ALI DAMOUHSCIENCE PHOTO LIBRARY
ED
+
Morning Glory pollen Coloured scanning electron micrograph of a pollen grain of the Morning Glory plant Ipomoea learii The grain has a highly sculp
RF
+
Pollen grain structure illustration
RM
+
Pollen of Eucalyptus SEM
RM
+
Pollen of Pulmonaria SEM
RM
+
Pollen of Eucalyptus SEM
RM
+
Pollen of Pulmonaria SEM
RM
+
Pollen of Lewisia SEM
RM
+
Pollen of Pulmonaria SEM
RM
+
Pollen of Lewisia SEM
RM
+
Germinating pollen SEM
ED
+
Cactus pollen Coloured scanning electron micrograph (SEM) of a pollen grain of an Echinopsis sp cactus Pollen grains contain male gametes which fe
RM
+
Germinating pollen SEM
RM
+
Pollen of Eucalyptus SEM
RM
+
Germinating pollen SEM
RM
+
Pollen of Lewisia SEM
RF
+
Pollen grains from different plants computer illustration Pollen grain size shape and surface texture differ from one plant species to another as
RF
+
Pollen grains from different plants computer illustration Pollen grain size shape and surface texture differ from one plant species to another as
RF
+
Pollen grains from different plants computer illustration Pollen grain size shape and surface texture differ from one plant species to another as
RF
+
Pollen grains computer illustration The outer wall (exine) of the pollen in many plant species is highly sculpted which may assist in wind water or
RF
+
Pollen grains computer illustration The outer wall (exine) of the pollen in many plant species is highly sculpted which may assist in wind water or
ED
+
Sunflower pollen grains Coloured scanning electron micrograph (SEM) of pollen grains from the sunflower (Helianthus annuus) The grains have a spiked
RF
+
Pollen grains computer illustration The outer wall (exine) of the pollen in many plant species is highly sculpted which may assist in wind water or
RF
+
Pollen grains computer illustration The outer wall (exine) of the pollen in many plant species is highly sculpted which may assist in wind water or
RM
+
Flower SEM
RM
+
Flower SEM
RM
+
Flower SEM
RM
+
Pollen of chickweed Stellaria media
RM
+
Pollen of chickweed Stellaria media
RM
+
Pollen of chickweed Stellaria media
RM
+
Sporopollenin and the delivery of drugs
ED
+
Sunflower pollen Coloured scanning electron micrograph (SEM) of pollen grains of the sunflower (Helianthus annuus) The outer wall (exine) of each po
RM
+
Sporopollenin and the delivery of drugs
RM
+
Sporopollenin and the delivery of drugs
RM
+
Light micrograph showing grains of lily (Lilium sp) pollen Microscopic contrast method Epi-Fluorescence blue excitation Pollen grain size shape
RM
+
Lily pollen light micrograph
RM
+
Dianthus pollen grains Coloured scanning electron micrograph (SEM) of pollen grains from a Dianthus in the pink family (Caryophyllaceae) Pollen grai
RM
+
Dianthus pollen grains Coloured scanning electron micrograph (SEM) of pollen grains from a Dianthus in the pink family (Caryophyllaceae) Pollen grai
RM
+
Wallflower pollen grains Coloured scanning electron micrograph (SEM) Erysimum (wallflower) is a genus of flowering plants in the botanical family Br
RM
+
Wallflower pollen grains Coloured scanning electron micrograph (SEM) Erysimum (wallflower) is a genus of flowering plants in the botanical family Br
RM
+
Wallflower pollen grains Coloured scanning electron micrograph (SEM) Erysimum (wallflower) is a genus of flowering plants in the botanical family Br
ED
+
Morning glory pollen grains Coloured scanning electron micrograph (SEM) of pollen grains from a morning glory flower (Ipomoea sp) The grains have a
RM
+
Wallflower pollen grains SEM
RM
+
St Johns wort (Hypericum perforatum) pollen grains coloured scanning electron micrograph (SEM) The characteristic surface of pollen grains is used
RM
+
St Johns wort (Hypericum perforatum) pollen SEM
RM
+
Daisy pollen SEM
RM
+
Sunflower petal ESEM
RM
+
Euphorbia pollen grains Scanning electron micrograph (SEM) Euphorbia (spurge) is a very large and diverse genus of flowering plants in the spurge fa
RM
+
Venus flytrap (Dionaea muscipula) pollen grains coloured scanning electron micrograph (SEM) Pollen grains containing the male sex cells (gametes)
RM
+
Venus flytrap (Dionaea muscipula) pollen grains coloured scanning electron micrograph (SEM) Pollen grains containing the male sex cells (gametes)
RM
+
Daisy (Bellis perennis) pollen grain coloured scanning electron micrograph (SEM) Pollen grains containing the male sex cells (gametes) are reprodu
ED
+
Rose of Sharon pollen grains Coloured scanning electron micrograph (SEM) of pollen grains from a rose of Sharon flower (Hibiscus syriacus) The grain
RM
+
Blue anemone (Anemone apennina) pollen grain coloured scanning electron micrograph (SEM) Pollen grains containing the male sex cells (gametes) are
RM
+
Grass pollen grain coloured scanning electron micrograph (SEM) Pollen grains containing the male sex cells (gametes) are reproductive structures p
RM
+
Bindweed pollen and stigma SEM
RM
+
Coloured scanning electron micrograph (SEM) of bindweed (Calystegia sepium) pollen grain on leaf surface There is great variation in the size shape
RM
+
Horse-chestnut (Aesculus hippocastanum) pollen grains coloured scanning electron micrograph (SEM) Pollen grains containing the male sex cells (game
RM
+
Daisy pollen (Helianthus sp) SEM
RM
+
Daisy pollen (Helianthus sp) SEM
RM
+
Daisy pollen (Helianthus sp) SEM
RM
+
Sunflower petal and pollen ESEM
ED
+
Winters bark pollen Coloured scanning electron micrograph of winters bark Drimys winteri pollen The pollen is found in associations of 4 grains k
RM
+
Sunflower petal and pollen ESEM
RM
+
Sunflower petal ESEM
RM
+
Olea europaea pollen grain Coloured scanning electron micrograph (SEM) of a pollen grain from Olea europaea or the european olive The olives fruit
RM
+
Olea europaea pollen grain Coloured scanning electron micrograph (SEM) of a pollen grain from Olea europaea or the european olive The olives fruit
RM
+
Olea europaea pollen grain Coloured scanning electron micrograph (SEM) of a pollen grain from Olea europaea or the european olive The olives fruit
RM
+
Dandelion pollen SEM
RM
+
Tradescantia pollen grains Coloured scanning electron micrograph (SEM) This member of the spiderwort family is also known by the common name of wand
RM
+
Tradescantia pollen grains Coloured scanning electron micrograph (SEM) This member of the spiderwort family is also known by the common name of wand
RM
+
Fremontodendron pollen grains Coloured scanning electron micrograph (SEM) Fremontodendron with the common names fremontia and flannel bush is a ge
ED
+
Ox-eye daisy pollen grain Coloured scanning electron micrograph (SEM) of a pollen grain from the ox-eye daisy flower (Chrysanthemum leucanthemum or L
547
0
https://www.afloimages.com/search/exine.html