Mackaya Bella
Macphersonia Gracilis
Macronectes Giganteus (Southern Giant Petrel)
Macrotinum
Madia Elegans
Mag Acet
Mag Carb
Mag Fluor
Mag Iod
Mag Lact
Mag Met
Mag Mur (Mag Chlor)
Mag Nit
Mag Oxydatum
Mag Phos
Mag Sil
Mag Sulph
Magenta
Maggot (Larva Lucilia Sericata)
Magnetis Artificialis (Mag Pol Ambo)
Magnetis Polus Ambo (Mag Artificialis)
Magnetis Polus Arcticus
Magnetis Polus Australis
Magnetite
Magnolia Grandiflora
Magpie (Pica Pica)
Mahogany
Mahonia (Berberis Aquifolium)
Maiasaura Lapidea (Dinosaur Fossil)
Maize (Corn, Zea Mays, Stigmata Maidis)
Makaira Nigricans (Blue Marlin)
Malic Acid (Acid Malic)
Mallein (Hippozaeninum)
Malus Comm
Malus Domesticus (Apple, Golden Delicious)
Malus Pumila (Crab Apple, Malus Sylvestris)
Malva Silvestris 
Mammary Gland
Manam Lava
Mancinella Hipp
Mandragora
Manganum Acet
Manganum Brom
Manganum Carb
Manganum Diox
Manganum Iod
Manganum Met
Manganum Mur
Manganum Nit
Manganum Oxy
Manganum Phos
Manganum Sil
Manganum Sulph
Mangifera Indica
Mangosteen (Garcinia Mangostana)
Mangrove (yellow, Ceriops Tagal)
Mangrove Viper (Trimeresurus purp)
Mantis Religiosa
MAP (Mucor Aspergillus Penicillinum)
Maple (Japanese, Acer palm)
Maple (Sugar, Acer saccharum)
Marble (Lapis Marmoris Calc)
Marbre Saccharoide
Marchantia Polymorpha
Margerine
Marmorek (Tub Marmorek)
Marmota Marmota (Marmot, alpine)
Marrubium Vulgare
Marsh Fritillary Butterfly (Euphydras Aur)
Marshmallow (Althaea Off)
Marten (Martes foina)
Marula (Sclerocarya Birrea)
Marum Verum (Teucrium Mar)
Marzipan
Mascara (mixed)
Mastodia Tessellata (Turgidosculum Complicatulum)
Matcha (Camellia Sinensis)
Mate (Ilex Paraguarensis)
Material
Matico (Piper Ang)
Matthiola Tricuspidata
Maytenus Ilicifolia
MCK I 170987
Median Nerve (Nervus Medianus)
Medicago Sat (Alfalfa)
Medorrhinum (Gonococcin)
Medulla Ossium (Bone Marrow)
Medusa (Aurelia Aurita, Moon Jellyfish)
Meerkat (Suricata Suricatta)
Megaptera Novaeangliae (Whale, Humpback)
Mel (Honey)
Mel Cum Sale
Melaleuca Altern (Tea Tree)
Melampsalta montana (Cicada)
Melanerpes Form (Acorn Woodpecker)
Melastoma Ackermanni
Melatonin
Meleagris Gallopavo (Turkey)
Meles Meles (Badger)
Meligethes Aeneus (Pollen Beetle)
Melilotus Off
Melissa Off
Melitagrinum
Melolontha Melolontha
Melolontha Melolontha (Cockchafer Beetle)
Melopsittacus Undulatus (Budgie)
Melospiza Melodia (Song Sparrow)
Menelaus Blue (Morpho Menelaus Occ)
Menispermum Canadense
Menstrual Blood
Mentha Arvensis
Mentha Piperita
Mentha Pulegium
Menthol(um)
Menyanthes Trifoliate
Mephitis Mephitis (M. Putorius)
Merc Acet
Merc Arsen
Merc Aur
Merc Brom
Merc Corr (Merc Chloride)
Merc Cyan
Merc Dulc (Calomel)
Merc Fluor
Merc Iod Flav (Merc Prot, Mercurous Iod)
Merc Iod Rub (Merc Bin-iod, Mercuric Iod)
Merc Kali Iod
Merc Nit
Merc Phos
Merc Praec Albus (Hydrargyrum Amm)
Merc Praec Flav
Merc Praec Rub
Merc Sil
Merc Sol
Merc Sulph
Merc Sulph Rub (Cinnabaris)
Merc Sulphocyan
Merc Viv (Hydrargyrum)
Mercaptanum
Mercurialis Perennis

Mercurius Ant (Aethiops Ant/Min/Merc)

Mesembryanthemum Cordifolia (Aptenia Cordifolia)
Mesembryanthum Cordifolia
Mesocricetus Aur (Pel Cavae Cobaiae, Golden Hamster)
 
Meteorite (Eising)
Meteorite (Fax Caelestis Allende)
Methacrylic Resin
Methane
Methanol (Methyl Alcohol)
Methionine (DL-)
Methyl Alcohol (Methanol)
Methyl Bromide
Methylene Blue (Methylenum Coeruleum)
Metron
Mexican Redknee Tarantula (Brachypelma Smithii)
Mezerium (Daphne Mezereum)
Mica
Micrococcin
Microwave
Micrurus Cor (Elaps Cor)
Midge (Culicoides Mixed, Sweet Itch)
Midge (Highland, Culicoides Impunctatus)
Mikania Guaco
Milk
Milk snake (Lampropeltis Triangulum)
Milk Thistle(Carduus Mar, Silybum Mar )
Millefolium (Achillea Millefolium)
Millipede (Polydesmus Angustus)
Milvus Migrans (Kite, Black)
Milvus Milvus (Kite, Red)
Mimosa Pudica
Mimulus Guttatus
Mimus Polyglottus (Mockingbird)
Mineral (Mineralis)
Minke Whale (Balaenoptera Acutorostrata)
Minovlae
Mirabilis Jalapa
Misodendrum Oblongifolium
Misodendrum Punctulatum (Fool's Misteltoe)
Mixed Grass Pollens (USA)
Mixed Grasses
Mixed Mosses
Mixed Moulds
Mixed Perfume
Mixed Pollen (Japanese)
Mixed Pollens
Mixed Pollens (Flower)
Mixed Pollens (Grasses and Flower)
Mixed Pollens (Grasses and Pollens)
Mixed Pollens (Tree)
Mixed Tree Pollens (USA)
Mixed UK Midge (Culicoides, Sweet Itch)
Mobile Phone (mixed frequency)
Mock Orange (Philadelphius Coronarius)
Mockingbird (Mimus Polyglottus)
Mokala (Acacia Erioloba)
Moldavite (Gem Essence) 
Mole (Talpa Europaea)
Molybdenum Met
Molybdenum Mur
Molybdenum Nit
Molybdenum Phos
Molybdenum Sulph
Molybdenum Trioxide (Acid Molyb, Molyb Acid)
Momordica Balsamina
Momordica Charantia
Monarch Butterfly (Danaus Plexippus)
Mongoose (Banded, Mungos Mungos)
Mongoose (Marsh, Atilax Pal)
Monkey (Capuchin, Cebus Apella)
Monkey (Vervet, Chlorocebus Pygerythrus)
Monkey Orchid (Orchis Simia)
Monkey Puzzle Tree (Araucaria araucana, Pehuén)
Monkfish (Anglerfish, Lophius Piscatorius)
Monosodium Glutamate (Sodium Glutamate, Natrum Glut)
Monzalite
Moon Jellyfish (Aurelia aurita, Medusa)
Moonstone
Moose (Elk, milk - Lac Alces)
Moray Eel (Muraena Mel)
Morgan (Bach)
Morgan Co
Morgan Gaertner (Paterson)
Morgan Pure (Paterson)
Morion (Immersion)
Morning Glory (Ipomoea Purp)
Morpho Menelaus Occ (Menelaus Blue)
Morpho Peleides (Butterfly, Blue Morpho)
Morus Nigra
Moschus Mosch (Tunq)
Mosquito (Anopheles Maculipennis)
Mosquito (Culex)
Moss (mixed wood)
Moss Agate
Motacilla Alba (White Wagtail)
Moth (see Acherontia, Apeira, Bombyx and Isia)
Moth (Tiger, Pyrrharctia, Isia Isabella)
Moulds (mixed)
Mourning Dove (Zenaida Macroura)
Mouse fur (Apodemus Sylv, Pel muris)
Mouse fur (Mus Musculus)
MRI Scan
Muco Bacter (Mersch)
Mucor Aspergillus Penicillinum (MAP)
Mucor Mucedo
Mucor Racemosus
Mud dauber (Sceliphron caementarium, wasp)
Mugwort (Artemisia Vulgaris)
Muira Puama
Mullein (Verbascum Thapsus)
Mungos Mungos (Banded mongoose)
Muraena Mel (Moray Eel)
Murex Purpurea
Muriaticum Acid (Acid Muriaticum, Hydrochloric Acid)
Murraya Paniculata
Mus Musculus (Mouse fur)
Musa Sapientum
Musca Domestica (House Fly)
Muscarinum Nit
Muscle (Non-striated Tissue)
Muscle (Striated Tissue)
Musculosum
Mushroom
Mussel (Blue, Mytilus Edulis, M. Trossilus)
Mussel (Brachiodontes Rodriguezi)
Mustela Erminea (Stoat, Weasel)
Mustela Putorius Furo (Ferret)
Mutabile (Paterson)
Mute Swan (Cygnus Olor)
Mycena Inclinata
Mycotoxins
Myelin
Mygale Lasiodora
Myna (Common, Acridotheres Tristis)
Myna (Hill, Gracula Relig)
Myocardium
Myosotis Arvensis (Field Forget-Me-Not)
Myosotis Symphytipolia (Forget-Me-Not)
Myrhhis Odorata (Myrhh)
Myrica Cerifera
Myristica Fragrans (tree)
Myristica Sebifera (Virola)
Myrrh (Myrrhis Odorata)
Myrtus Comm
Mytilus Edulis (Mytilus Trossilus, Mussel)